16 Best Third Party API Integration Companies in India (2026)

Gilzor is a software development company that works with startups, SMBs, and product teams on custom digital products, including third-party API integrations. We support businesses across different markets, including India, where companies often need to connect payment platforms, CRMs, cloud services, communication tools, analytics platforms, and other external systems as part of their products. We approach integrations as one part of the overall product architecture, making sure they fit naturally into existing workflows and remain maintainable over time.

Our work covers the full product lifecycle, from validating an idea and planning the architecture to development, testing, deployment, and ongoing support. When API integrations are involved, we focus on secure data exchange, reliable communication between systems, and compatibility with both existing and new software. Alongside development, we also help define technical requirements, improve user experience, and support product growth as business needs change.

Encrypted Infoweb develops software solutions with a strong focus on third-party API integration for web applications, mobile apps, and enterprise platforms. Based in India, they work with businesses in different markets that need reliable connections between internal systems and external services such as payment gateways, CRM platforms, ERP software, cloud applications, and marketing tools. Their work around API integrations is part of broader software development projects, helping businesses keep data synchronized across multiple platforms.

Their development process includes planning the integration architecture, handling authentication, mapping data, testing connections, and providing ongoing support after deployment. They also work with REST APIs, GraphQL APIs, webhooks, and cloud services while adapting integrations to existing technology stacks. Alongside API integration, they cover related areas such as web development, application development, testing, and software maintenance, making integrations fit naturally into larger digital products.

Technoarch Softwares focuses on software development with third-party API integration as one of its core technical services. The company builds connections between business applications and external platforms, allowing websites and mobile apps to use features such as payment processing, mapping, authentication, booking systems, and social login without creating those functions from scratch. API integration is presented as part of a broader development process where performance and user experience are considered from the beginning.

Different projects require different types of integrations, so the team works with APIs that support payment gateways, OAuth authentication, mapping services, and travel platforms. Their experience across industries also allows them to integrate APIs into products with different business requirements while keeping communication between systems organized and reliable.

Invoidea develops APIs and integrates external services into business applications that need reliable communication between multiple systems. Their projects include custom APIs as well as third-party integrations that help connect software with external platforms for data exchange, automation, and everyday business operations. API development is combined with security, documentation, and performance monitoring throughout the implementation process.

Alongside integration work, the company covers API gateways, traffic management, authentication, and infrastructure evaluation. Their solutions are used across industries where different business systems need to exchange information smoothly while supporting future updates and additional integrations as products evolve.

Webverz India integrates third-party APIs into websites, ecommerce platforms, and business applications that need additional functionality without replacing their existing software. Their projects include connecting payment gateways, shopping carts, chat systems, news feeds, mapping tools, and office applications so businesses can expand what their platforms are able to do while continuing to use their current infrastructure.

Before implementation begins, they review the existing web structure to determine which APIs fit the project requirements. From there, the integration moves through development, compatibility checks, and deployment with attention to keeping the connected features easy to use and maintain over time.

WebHopers offers third-party API integration for travel platforms where multiple booking services need to work together inside a single application. Their projects connect websites with external travel providers so users can access hotels, flights, buses, trains, and related services without leaving the platform. These integrations help centralize travel information while simplifying booking processes.

The company also handles supporting integrations that travel businesses commonly rely on, including payment gateways, SMS services, XML feeds, and GDS connectivity. Because travel platforms depend on real-time information from different providers, API integration becomes an important part of keeping booking data synchronized across connected systems.

Uisort builds custom APIs and connects business applications with third-party services to improve data exchange between different systems. Their API integration work covers web and mobile products where external platforms need to communicate with existing software without interrupting everyday operations. Along with custom API development, they support integrations based on REST, SOAP, XML, and RPC protocols, depending on the technical requirements of each project.

Every integration is treated as part of a larger software ecosystem, so attention is given to compatibility, stable communication, and future maintenance. The company works with businesses from different regions, helping them connect internal applications with external tools while keeping workflows simple and easy to manage.

SunTec India approaches API development as part of building connected digital systems where applications, cloud platforms, and external services exchange information without unnecessary manual work. Their projects include both custom APIs and third-party integrations for businesses that need reliable communication between ecommerce platforms, enterprise software, cloud services, payment systems, and customer-facing applications.

Beyond connecting systems, the company covers API architecture, testing, deployment, monitoring, and lifecycle management. Their process includes planning integrations, validating performance, maintaining version compatibility, and supporting APIs after launch so they continue working as business requirements change.

WebCrowd Solutions develops API integrations that connect business applications with external platforms while keeping security and long-term maintenance in mind. Their projects include integrations with payment gateways, CRM platforms, ecommerce systems, social media services, and other third-party applications that businesses use every day. The company also supports custom API development when ready-made solutions are not enough.

A practical part of their approach is preparing integrations that can continue working as applications grow. This includes authentication, data synchronization, monitoring, testing, and ongoing support after deployment. Their process is structured around planning, implementation, validation, and maintenance so connected systems remain stable as external APIs change.

Authorselvi builds custom APIs and connects business applications with third-party services to simplify how different systems exchange data. Their API integration projects cover web, mobile, cloud, and SaaS environments, allowing businesses to add external functionality without changing the core application. Depending on the project, the integrations can include payment processing, messaging, logistics, accounting platforms, security tools, or social media services.

Every integration is planned around the existing software, so new services fit naturally into day-to-day operations. The company handles API design, testing, monitoring, maintenance, and ongoing support while using common standards such as REST, SOAP, JSON, XML, and HTTP protocols. Their experience spans several industries where reliable communication between platforms plays an important role in daily business processes.

Innovative Solution Technologies focuses on PHP-based web development where third-party API integration is a regular part of software projects. Their developers connect websites and business applications with external platforms so businesses can add existing functionality without building every feature themselves. Common integrations include payment gateways, cloud ERP systems, logistics platforms, social media services, SMS gateways, and tracking solutions.

Each project is approached with compatibility and long-term usability in mind. Along with API integration, the company develops custom web applications that rely on secure communication between different systems. Their experience with PHP allows them to integrate external services into ecommerce platforms, business software, and customer-facing applications while keeping development straightforward.

JTSi India develops API integration solutions that connect business applications with external software, cloud platforms, and existing enterprise systems. Their approach focuses on improving communication between applications so data, business functions, and services can move more efficiently across connected platforms. API development is combined with integration, documentation, deployment, and long-term maintenance as part of the same process.

Instead of limiting integrations to standard APIs, they build custom interfaces when projects require specific business logic or communication with legacy software. Their services are used to improve authentication, connect CRM applications with external data sources, support cloud storage, and make business processes easier to manage across multiple systems.

Brain Inventory approaches API integration through mobile application development, helping apps exchange information with cloud platforms, databases, enterprise software, and third-party services. Their projects focus on keeping data synchronized across connected systems so users receive a consistent experience regardless of the platform they are using. Mobile integration becomes part of the overall application architecture instead of being treated as a separate feature.

As projects move forward, attention shifts toward connecting backend systems, automating data flow, and reducing manual processes between applications. This allows businesses to link customer-facing apps with internal software while supporting real-time updates and smoother day-to-day operations across connected environments.

WeblinkIndia includes third-party API integration as part of its web development services, helping businesses extend existing websites and applications with external functionality. Their integration projects cover payment gateways, office applications, social media platforms, chat systems, mapping tools, shopping carts, and other services that can be connected without rebuilding the entire software. The focus stays on making new features fit naturally into the current platform while keeping everyday operations uninterrupted.

The integration process begins with understanding how the existing website is built before selecting the most suitable APIs for the required functionality. From planning through implementation and testing, each stage is intended to keep systems compatible while making future updates easier to manage.

CodeStore Solutions develops third-party API integrations that help business applications exchange information with external platforms in real time. Their projects include connecting websites, SaaS products, and business software with APIs that support automation, synchronized data, and communication across different systems. The company covers the complete process, from reviewing technical requirements to implementation, testing, and ongoing support.

Every integration is adapted to the existing software environment, whether it involves connecting a single external service or linking several business platforms together. Alongside integration work, they assist with API consulting, customization, maintenance, and future upgrades so applications can continue operating smoothly as business needs evolve.

TechAhead develops custom APIs and integrates business systems that need secure communication across web, mobile, cloud, and enterprise environments. Their API projects include connecting payment platforms, CRM software, shipping services, legacy systems, and third-party applications while supporting secure authentication and reliable data exchange. API architecture, development, testing, and deployment are handled as connected stages of the same process.

As systems become more connected, their work extends beyond creating endpoints and focuses on maintaining performance, security, monitoring, and compatibility over time. Different integration strategies are used depending on how existing infrastructure, cloud services, and external applications need to communicate with one another.